My Math Forum Complete the sequence

 Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion

 October 25th, 2015, 10:17 PM #1 Senior Member     Joined: Oct 2013 From: Far far away Posts: 422 Thanks: 18 Complete the sequence What is the missing number in the following sequence? 234;_____; 23,481; 234,819; 2,348,200 My guess is 2347...we have to add the last two digits. Kindly tell me the rationale behind the sequence. Thanks
 October 26th, 2015, 06:21 AM #2 Math Team   Joined: Apr 2010 Posts: 2,778 Thanks: 361 Seems like a good guess to me. A formula would be: a(0) = 234. for n > 0, a(n+1) = 10*a(n) + [floor(a(n)/10) mod 10] + [a(n) mod 10]. Thanks from shunya

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